Die for shaping the claws of hammer-heads



(No Model.) 2 Sheets--Sheet 1.

A. LAUNDRY.

DIE FOR SHAPING THE GLAWS OF HAMMER HEADS.

No. 398,166. Patented Feb. 19, 1889.

Fig. (5. 7. 6.

Witnesses.

(No Model.) 2 Sheets-Sheet 2.

A. LAUNDRY.

. DIE FOR SHAPING THE GLAWS 0F HAMMER HEADS. No. 398,166. Patented Feb.19, 1889.

Fig. m Fi /4 m m Nrrn STATES l arnnr @rricis.

ANDREW LAUNDRY, OF MONTREAL, QUEBEC, (AXAlL-X, AEQIGNCXR OF ONE HALF TOHENRY HARRISON \VARREN, F )LXSSFNA, NElV YORK.

DIE FOR SHAPING THE. CLAWS OF l-lAiVllViER-HEADS.

SPECIFICATION forming part of Letters Patent No. 398,166, dated February19, 1889. Application filed November 17, 1888. Serial No. 291,098.tNnmodel.)

T 0 aZZ whom, it may concern: The die e is made wiihtwo curvedsu rfaces,Be it known that I, ANDREW LAUNDRY, a g, of the curve to which the outersurface subject of the Queen of Great Britain, resid of the claws to beformed, (see Fig. 13,)

ing at the cit-y of Montreal, in the district of and with a recessed orlower surface, Z, of the Montreal and Province of Quebec, Canada,configuration and proper relative position to 55 have invented new anduseful Improvements form the inner curve to which the inner surinApparatus for Making Hammers; and I face, is, to be formed.

do hereby declare that the following is a full, or is a projection,which may or may not clear, and exact description of the same. be used,aswill be hereinafter more particu- This invention has reference toimprovelarly described. 60

ments in the apparatus by which the claws The guide f is provided withtwo curved of claw-lmmmers or carpenters hammers surfaces, n, parallelwith the surface g,for the are formed from blank or partly-madehamthimbles d',hereinafter described, to roll. upon, mers; and theobject of my improvements is and a recess-surface, 0, somewhat wider, orto enable the said claws to be formed at one equal to the length of thecenter part, C, of 65 operation to the proper size and bend, so that theroll A, so that between the two surfaces by slightly spreading the clawsapart the g and n a parallel curved groove or channel, hammer is readyfor finishing by grinding p, is formed the proper size for a roll, A, toand polishing without any further man'ipulajust freely pass up and downin without any tion when the hammers are to be polished. lost motion. 7

In the drawings hereunto annexed similar In the face of the die 0 aproperly-situated letters of reference indicate like parts. surface, 0',is formed for resting a side of the Figure 1a side elevation of anapparatus shank of the hammers eye against, as shown embodying myinvention. Fig. 2 is an end in Fig. 1.

. 2 5 elevation of the apparatus shown in Fig. 1. On the end of the rest7) is formed a pivot, 75 Fig. 3 is a plan of the apparatus shown in s,forming the fulcrum of a lever, 7 provided Fig. ],the pivotedlever Ibeingomitiied. Fig. with jaws u to embrace and hold down in -l is anelevation of the rollA detached. Fig. place the outer end, a, of thehammer-blank 5 is an elevation of the roll A modified, dowhile the innerend, I), is being acted. upon 0 tached. Fig. U is end elevation of theroll. by the rollA. Many other ctmtrivances may 80 Figs. 7 and S areisometrical views of hammerbe arranged for this purpose and could be atblanks. Fig. 9 is an elevation ofthe face of lhe once suggested by anyskilled ordinary maguidej' and end view of the rest (1. Fig. id ischinist. an elevation of the front face of the die e and Theblzmk-haminers are so far prepared as rest I). Fig, 1.1. is a view ofthe back face of to have their adz-eyes formed in them, 85 the die e andendot' rest b. Fig. 12 is longiand the face end, u.,if such is to berounded, tndinal vertical section of the die 0 and guide formed as shownat 11, in Fig. 13. The end f, taken on line .1, Fig. I). Fig. 13 is anisoof. the blank that is to be formed into the metrical view of thelmlnmer as finished. claws provided with a split, 1), as shown 40 (I isany suitable bed, on which. is placed in Fig. 7. This ismade somewhatlargerthan o and secured, or made integral therewith a f the split is tobe when the hammer finrest, I), closely filling the bases c and (I ofthe ished.

die e and guide], these being further secured The roll A consists of amandrel havingan. endwise by a key or wedge, 71. enlarged. center part,c. This may be par- The object of making the bases 0 and d in allel, asshown inv Fig. 5, or it may be made 95 two parts is to save expenses inconstruction with a concavity, as shown in Fig I. When and repairs ofthe die e and guide f; otherthe roll. is made parallel, it rolls theouter surwise they would be more rigidly connected face, 71, Fig. 1.3,of the claws flat in cross-sectogether by making them in one piece, sotion, and when made as shown inv Fig. 4 it that, if desired, they may bemade integral. imparts a curved outer surface, 71., in cross- IOOsection. On the ends h of the roll A are placed thimbles d, which act asfrictionwheels, and are in diameter equal to the dis tance between thesurfaces 21 and. g.

e are connecting-rods. These are attached to any desired pitman or otherreciprocatingly-moved body actuated by power.

The hammer-blank having been provided with the split Z) of suitable sizefor what is desired and the said split end heated to a good red heat, itis placed in position with the dies, as shown in Fig. 1, and secured inplace by the lever t. The roll A is then brought down upon it in theposition shown in Fig. 1, and the roll, being forced by the continuedmotion down to near the bottom of the groove 9, rolls the end 1)" intothe configuration that the back of the die (2 and roll have beendesigned to impart to the claws. Any surplus material in the claw end ofthe blank-hammers is cut off at that part at which the surfaces I and grun to nothing, or unite at the back of the die e, and such surplusfalls down. to the bottom of the groove p, from which it is removed eachtime a hammer-blank is treated.

The hereinbefore-mentioned projection m if used, is by preference madein height about half of the difference of height between the surfaces Zand g, and is for the purpose of keeping the split 1) open a positiveamount. If the projection on were made in height equal to the height ofthe surfaces g, a fin would be formed between the two claws, which wouldrequire much trouble to remove.

By actual operation I have found that very desirably formed claws tohammers are obtained when the projection on is omitted.

The claws of the hammer, when removed from the die 6 after having beenoperated on by the roll A, are finished to a perfect shape, and do notrequire any further manipulation, except to slightly spread them apart,which is easily done by driving a wedge in between them before they havebecome cold. The hammers are then ready for grin ding and finishing orpolishing.

hat I claim is as follows:

1. In an apparatus for forming the claws of carpenters hammers, thecombination of the die 6, having curved surfaces g and Z, also havingprojection m, with. guide f, having curved surfaces n, and roll A,arranged to be guided by the curved surfaces g and n, the wholesubstantially as and for the purposes set forth.

2. In an apparatus for forming the clawsv

